Methods for the production of tinted contact lenses

Details Methods for the production of tinted contact lenses Methods for the production of tinted contact lenses

B - Operations, Transporting

29

D

B29D 11/00 (2006.01) B29C 37/00 (2006.01)

Patent

CA 2489419

The invention provides a method for producing tinted contact lenses in which diffusion of monomer into the colorant is aided by heating of the molds. The invention provides a method, and lenses produced by that method, that reduces the residual, unbound polymer on the lens surface and lens surface roughness.

L'invention concerne un procédé permettant de produire des lentilles de contact teintées. Dans ce procédé, les moules sont chauffés afin de faciliter la diffusion du monomère dans le colorant. L'invention concerne également un procédé qui permet de réduit le nombre de restes détachés de polymère sur la surface de la lentille et diminue la rugosité de la surface de la lentille ainsi que des lentilles obtenues au moyen de ce procédé

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